Curriculum discourse analysis Task - Identify the black words in the text below, there are 12 of them. Infections Food and water are sources of infection. Raw food is covered in microorganisms. Most are harmless or do the body good. They grow in our intestines and protect them from more harmful germs, but others cause disease, especially if food's been contaminated by sewage or animal waste, or hasn't been cooked properly. Contact with animals also exposes us to new microorganisms. A bite from an infected dog could lead to rabies, for example. While cleaning out a lizard's cage could lead to salmonella.